Automaticity Is the Ability of Cardiac Pacemaker Cells To

question 15

Multiple Choice

Automaticity is the ability of cardiac pacemaker cells to:

• A) cause cardiac muscle contraction.
• B) respond to an electrical stimulus.
• C) receive an electrical impulse.
• D) generate their own impulses without external stimulation.

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Definitions:

Chlorophyll

A green pigment found in the chloroplasts of plants, algae, and some bacteria, essential for photosynthesis.

Wavelength

Distance between the crests of two successive waves.

Photolysis

Process by which light energy breaks down a molecule.

Photosynthetic Pathway

The series of chemical reactions by which plants, algae, and some bacteria convert sunlight into chemical energy.